Revenue and market cap are two different things. The 2 trillion you mentioned is market cap, not revenue, much less it is profit.

I agree it would be a prettier picture if companies paid their workers fairly. But the companies would grow differently. Maybe they would grow better, but differently and more distributed. Comparing absolute values between our world and this dreamland seems silly though.

And I hope that in a world where we are paid fairly we would produce less crap, pollute less. Workers wouldnt be desperately making bad/useless products in order to just survive. A smaller gdp could be a good thing.